According to the passage, which of the following best explains tile reaction of serious con- temporary photographers to tile question of whether photography is an art
A、The photographers' belief that their reliance on an impersonal machine to produce their art requires the surrender of the authority of their personal vision.
B．The photographers' fear that serious photography may not be accepted as an art by the con- temporary art publiC、
C、The photographers' belief that the best art is subversive of art as it has previously been de- fineD、
D．The notorious difficulty of defining art in its relation to realistic representation.